One of the most common practices for the control of salmonella in feed products was the use of formaldehyde as a feed additive. However, the EU Commission has recently voted to ban the use of formaldehyde for this purpose (EU 2018/183)...

It can take up to three months or even more for food to travel from the farm to table. “The longer this supply chain, the less control you have over the product and the harder it is to maintain quality and safety.”